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Unity Editor下拉框，支持搜索，多层级

news 2025/7/16 7:00:12

using Sirenix.OdinInspector;
using System;
using System.Collections.Generic;
using UnityEditor;
using UnityEngine;namespace Tools
{public class TGDropdownView{private List<DropdownItem> rootItems;private DropdownItem selectedItem = null;private Action<DropdownItem> onSelect;private string searchText = "";private Vector2 scrollPos;private bool showAllItemsOnOpen = true;      // 控制弹窗是否显示所有项（空搜索时）private bool showFullPathOnHeader = true;   // 控制下拉框按钮显示完整路径还是只显示节点名private DropdownItem hoverItem = null;private GUIStyle itemStyle;private HashSet<DropdownItem> matchedItems = new();public TGDropdownView(List<DropdownItem> items, Action<DropdownItem> onSelectCallback){rootItems = items;selectedItem = GetFirstLeaf(items);onSelect = onSelectCallback;itemStyle = new GUIStyle(EditorStyles.label){normal = { textColor = EditorGUIUtility.isProSkin ? Color.white : Color.black }};RefreshMatchedItems();// 初始化时如果有默认选择项，触发回调if (selectedItem != null){onSelect?.Invoke(selectedItem);}}// 外部控制属性public bool ShowAllItemsOnOpen{get => showAllItemsOnOpen;set => showAllItemsOnOpen = value;}public bool ShowFullPathOnHeader{get => showFullPathOnHeader;set => showFullPathOnHeader = value;}// 获取当前选择的项public DropdownItem SelectedItem => selectedItem;// 只画按钮，点击弹出窗口public void DrawInline(string label = "", float labelWidth = 100f, bool showLabel = true){EditorGUILayout.BeginHorizontal();if (showLabel){EditorGUILayout.LabelField(label, GUILayout.Width(labelWidth));}DrawHeader();EditorGUILayout.EndHorizontal();}// 下拉框按钮绘制和弹窗触发private void DrawHeader(){string buttonText;if (rootItems == null || rootItems.Count == 0){buttonText = "当前无任务";}else if (selectedItem == null){buttonText = "请选择 ▼";}else{buttonText = showFullPathOnHeader ? selectedItem.GetFullPath() : selectedItem.Name;}float maxWidth = EditorGUIUtility.currentViewWidth / 2 + 50;Rect buttonRect = GUILayoutUtility.GetRect(new GUIContent(buttonText), EditorStyles.popup,GUILayout.ExpandWidth(true), GUILayout.MaxWidth(maxWidth));GUI.enabled = !(rootItems == null || rootItems.Count == 0);if (GUI.Button(buttonRect, buttonText, EditorStyles.popup)){if (rootItems != null && rootItems.Count > 0){PopupWindow.Show(buttonRect, new TGDropdownPopup(this, buttonRect.width));}}GUI.enabled = true;}// 弹窗内绘制内容public void DrawPopupContent(){DrawSearchBox();Rect lineRect = EditorGUILayout.GetControlRect(false, 1);EditorGUI.DrawRect(lineRect, new Color(0.5f, 0.5f, 0.5f, 1f));DrawItemList();}private void DrawSearchBox(){float lineHeight = 20f;EditorGUILayout.BeginHorizontal(GUILayout.Height(lineHeight));// 搜索图标，限制宽高并垂直居中GUILayout.Label(EditorGUIUtility.IconContent("Search Icon"), GUILayout.Width(lineHeight), GUILayout.Height(lineHeight));// 搜索文字，固定宽度，高度和图标一样GUILayout.Label("搜索", GUILayout.Width(40), GUILayout.Height(lineHeight));// 输入框，高度和图标一致，宽度自动扩展EditorGUI.BeginChangeCheck();searchText = EditorGUILayout.TextField(searchText, GUILayout.Height(lineHeight));if (EditorGUI.EndChangeCheck()){RefreshMatchedItems();}EditorGUILayout.EndHorizontal();}private void DrawItemList(){if (matchedItems.Count == 0){EditorGUILayout.LabelField("没有匹配的项目", EditorStyles.miniLabel);return;}scrollPos = EditorGUILayout.BeginScrollView(scrollPos, GUILayout.Height(400));foreach (var root in rootItems){DrawItemRecursive(root);}EditorGUILayout.EndScrollView();}private void DrawItemRecursive(DropdownItem item){if (!matchedItems.Contains(item)) return;// 先计算缩进后按钮区域的Rectfloat indent = item.Depth * 20;// 先获取整行rect（不含缩进）Rect fullRect = GUILayoutUtility.GetRect(1, 20, GUILayout.ExpandWidth(true));// 缩进后的按钮区域Rect buttonRect = new Rect(fullRect.x + indent, fullRect.y, fullRect.width - indent, fullRect.height);Vector2 mousePos = Event.current.mousePosition;bool isHover = buttonRect.Contains(mousePos);if (isHover){hoverItem = item;EditorWindow.focusedWindow.Repaint();}EditorGUI.DrawRect(fullRect, isHover ? new Color(0.24f, 0.48f, 0.90f, 1f) : Color.clear);GUI.enabled = item.IsLeaf;if (GUI.Button(buttonRect, item.Name, itemStyle)){if (item.IsLeaf){selectedItem = item;onSelect?.Invoke(item);EditorWindow.focusedWindow?.Close();}}GUI.enabled = true;var lineRect = GUILayoutUtility.GetRect(1, 1, GUILayout.ExpandWidth(true));EditorGUI.DrawRect(lineRect, new Color(0.3f, 0.3f, 0.3f, 0.4f));foreach (var child in item.Children){DrawItemRecursive(child);}}private bool MatchItemRecursive(DropdownItem item){// 去掉搜索词中的空格string trimmedSearchText = searchText.Replace(" ", "");// 去掉路径中的空格string itemPath = item.GetFullPath().Replace(" ", "");// 判断是否匹配bool matched = string.IsNullOrEmpty(trimmedSearchText) ||itemPath.IndexOf(trimmedSearchText, StringComparison.OrdinalIgnoreCase) >= 0;bool childMatched = false;foreach (var child in item.Children){childMatched |= MatchItemRecursive(child);}if (matched || childMatched){matchedItems.Add(item);if (item.Parent != null) matchedItems.Add(item.Parent);return true;}return false;}// 刷新匹配项的公共方法public void RefreshMatchedItems(){matchedItems.Clear();if (showAllItemsOnOpen && string.IsNullOrEmpty(searchText)){// 直接把所有节点及子节点都加进matchedItemsvoid AddAllItems(DropdownItem item){matchedItems.Add(item);foreach (var child in item.Children){AddAllItems(child);}}foreach (var root in rootItems){AddAllItems(root);}}else{foreach (var root in rootItems){MatchItemRecursive(root);}}}private DropdownItem GetFirstLeaf(List<DropdownItem> items){foreach (var item in items){if (item.IsLeaf) return item;var leaf = GetFirstLeaf(item.Children);if (leaf != null) return leaf;}return null;}}// 弹窗类public class TGDropdownPopup : PopupWindowContent{private TGDropdownView dropdown;private float popupWidth;public TGDropdownPopup(TGDropdownView dropdownView, float width){dropdown = dropdownView;popupWidth = width;}public override Vector2 GetWindowSize(){return new Vector2(popupWidth, 425);}public override void OnGUI(Rect rect){dropdown.DrawPopupContent();}}public class DropdownItem{public string Name;public int Depth;//public object[] UserData;public object UserData;public DropdownItem Parent;public List<DropdownItem> Children = new();public DropdownItem(string name, int depth = 0, object userData = null){Name = name;Depth = depth;UserData = userData;}public bool IsLeaf => Children.Count == 0;public string GetFullPath(){return Parent == null ? Name : Parent.GetFullPath() + "/" + Name;}}
}

using Newtonsoft.Json;
using Sirenix.OdinInspector;
using Sirenix.OdinInspector.Editor;
using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using UnityEditor;
using UnityEngine;namespace Tools
{[Serializable]public class TGDropdownViewBox{private TGDropdownView dropdown;public TGDropdownView Dropdown => dropdown;public TGDropdownViewBox(List<DropdownItem> items, Action<DropdownItem> onSelectCallback){dropdown = new TGDropdownView(items, onSelectCallback);}[OnInspectorGUI]private void DrawCustomInspector(){//GUILayout.Space(10);dropdown?.DrawInline(showLabel: false);}}}